Let’s face it, no one wants to date a cheat, but oftentimes we don’t see the signs your boyfriend is a shady little liar. Forget him answering his phone in the closet or being less affectionate with you. Through journal studies and surveys from users on cheating websites, science seems to know exactly what makes someone more likely to be unfaithful.

Types of People Who May Be More Likely to Cheat

A study from dating site AYI.com looked at 50,000 interactions over two months and discovered that the likelihood that a man under 5-foot-9 is contacted by a Manhattan or Bronx woman online is just 1.2 percent!

But does someone’s height or name really make them any more (or less) likely to stray—or are these things strange coincidences? Well, only those who have dated these nine people may know the truth. Until you do the dating legwork, we’ll give you the facts and let you make an educated decision yourself.

Tall Guys Cheat

We’re telling you this not just because short guys make us swoon. Last week, a study from the extra-marital dating site IllicitEncounters.com found that dudes over 5’10” are twice as likely to cheat on their partner. We knew they were up to no good up there.

Rock N’ Roll Fans Cheat

Don’t say your straightedge mom didn’t warn you: Another survey from IllicitEncounter.com found that 41 percent of cheaters prefer rock music to all other genres. Your best bet for a loyal partner? Rap lovers.

The French Cheat

What can you expect in a relationship with the best lovers in the world? Wine, cheese, and an affair: 75 percent of the French admit to cheating, according to LELO, a luxury sex toy brand that surveyed bedroom habits from people worldwide.

Twitter Users Cheat

Shocker: Social media can be harmful your romantic relationship! While this isn’t too surprising, research from the University of Missouri shows those who tweet cheat. The more often a person uses Twitter, the more often they have relationship conflicts, like affairs.

Waynes Cheat

An easy giveaway he’s sleeping with someone else? His name. A study of 2,000 women found Wayne ranked as the least trustworthy name in love.